Bolt mechanism.



D. WALTER.

- BOLT MECHANISM.

APPLICATION FILED MAR. 20, 1916.

1 ,Q28, 995 a Patented June 5, 1917.

Flcrl.

DANIEL. WALTER, 0F HOVE ENGLAND.

BOLT MECHANISM.

- Application filed March 20, 1916.

To all whom it may concern.

Be it known that I, DANIEL IVAL'rnn, a subject of the King of Great Britain and Ireland, and residing at Grosvenor House, New Church Road, Hove, Sussex, England, have made certain new and useful Improvements in Bolt Mechanism, of which the following is a specification.

This invention relates to sliding bolts for doors, easements or other applicable devices wherein the bolt member is moved longitudinally by means of a pivoted lever the inner end of which engages a longitudinal slot or aperture formed within such member with means for securing such lever in either extreme position.

The object of the present invention is to provide a device of the above character which shall be simple in action and cheap to manufacture.

A sliding bolt according to this invention is operated by a fulcrumed lever consisting of a. spherical body portion rotatably mounted upon a pivot pin with a cylindrical casing having a semi-spherical socket therein which spherical body is formed integral with or otherwise provided with a pair of diametrically opposed arms one of which engages the sliding bolt member with means in connection with the other arm for retaining it in either of its extreme positions.

In order that my invention may be fully understood, I will now proceed to describe practical applications of the same by aid of the accompanying drawings in which Figure 1 is a central longitudinal sec tion through one form of bolt according to this invention showing the same position on a door.

Fig. 2 is a side sectional elevation, and

Fig. 3 is a face view of the lever looking means.

Fig. 4 is a sectional detail view showing through the lever, socket and bolt.

Like numerals of reference indicate like parts throughout the specification.

In the drawings, but with particular reference to the arrangement shown in Fig. 1 thereof, 1 indicates a bolt member which is slidably mounted within a bushed or other recess formed within the door or the like 2 the forward end of which may be beveled if preferred and is adapted to engage a coincident recess 3 in the door frame 4 in the usual manner.

To move the bolt member 1 longitudi- Specification of Letters Patent.

Serial no. 85,517."

nally within its recess I employ a fulcrumed lever consisting in a spherical body portion 5 rotatably mounted upon a pivot pin 6 within a concentric casing 7 the exterior of which is screw threaded, preferably on a taper to provide forits security within the face of the door 2 without the use of screws, nails or the like.

Formed integral with or otherwise attached to diametrically opposite points on the spherical body 5 are arms 8 and 9, the arm 8 being arranged to extend through the casing 7 and beyond the face of the door 2 and provided atits outer extremity with a knob or handle 10. The other arm 9 extends transversely within a slot or recess 11 which is formed within the door and communicates at its inner end with the bushed gr other recess containing the bolt mem- The inner end of the bolt member 1 is provided with a transverse aperture or the like 12 having parallel walls oppositely inclined with which the free end of the arm 9 engages. a A suitable spring or the like 13 is provided adapted to normally press against the face of the arm 9 thereby creating a frictional resistance to movement sufficient to retain the said arm secure against all normal shocks.

In operation the swinging movement of the fulcrumed lever about its pivot 6 serves to operate the sliding bolt member 1 through the engagement therewith of the free end of arm 9 in the aperture 12.

The modified form illustrated in Fig. 2 is primarily intended for use on motor cars and other vehicles although its suitability for further applications is apparent.

According to this arrangement the sliding bolt member 1 is normally retained in the operative or engaged position by means of a helical or other spring 1 arranged within a tubular bushing 15 at the rear of the said member 1 and arranged to embrace a reduced portion 16 on such member to center and retain the same in a correct position which reduced portion extends beyond the inner end of the bushing 15 through a convenient aperture formed therein to receive it.

To retain the sliding bolt 1 in the off position when required, I have provided a sliding plate 17 arranged on the exposed face of the concentric casing 7 between Patented June 5, 191 7.

of the U-shaped slot allows for the normal side to side movement of the arm 8' while "the legs or branch portions 17 serve to re tain the said arm in either the on or off positions the distance between each such portions 17 being equal to the travel of such arm 8.

To apply this device to a door the door is bored to a convenient depth-to receive the bolt, such bore being preferably provided as shown, with a metal liner or bushing; the slot 11 is made communicating with the bore which extends from the face of the door at which place is inserted therein the casing 7 which has the semi-spherical socket in which is seated the body portion 5 of the lever, the free end of arm'9 engaging the slot 12 in the bolt and, the handle 10 projecting from the face of the door, and as shown in Fig. 2 through the slidable plate 17.

I claim:

1. The combination with a door or the like, a bolt slidably mounted therein, of an operating lever consisting of a spherical in termediate portion, and diametrically oppositely extending arms projecting from said spherical portion, a cylindrical casing fitted into the face of the door and having a semi-spherical socket therein, the spherical portion of said lever pivotally mounted in said socket, one arm of said leverrprojecting inwardly and loosely engaging said bolt, the other'arm projecting through the face of the door, a plate slidably mounted on' said last mentioned arm projects, said slot I having perpendicular branch slots at each end, whereby the operating lever may be held in locked or unlocked position.

2. The combination with a slidable bolt, of an operating lever consisting ofa spherical body portion rotatably mounted on a pivot, said pivot held in a cylindrical casing having a semi-spherical socket to receive said body portion of thelever, said lever having diametrically oppositely projecting arms, one arm engaging said bolt, the other arm projecting outwardly and forming a handle to operate the lever and spring means engaging the bolt engaging arm to hold same against normal shocks.

3. A bolt mechanism for doors comprising a bolt slidably mounted in the door and a passage extending from the bolt to the face of the door, a bushing fitted in said passage and having a guideway on its outer face, said bushing also having a semi-spherical socket therein and within the door body, an operating lever consisting of a spherical intermediate portion pivotally mounted within said socket and diametrically oppositely extending arms projecting from the spherical portion, one arm of said lever projecting inwardly and loosely engaging said bolt, the other arm projecting through the outer end of the bushing to constitute a handle, and a locking plate mounted in the guideway at the outside of said bushing to hold said handle in locked or unlocked position.

Dated this 18th day of May, 1915.

DANIEL WALTER.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, D. (2. 

